,
- 1
130400.65.00.10
( 130400.65 )
2013
. . - 1 130400.65.00.10 ( 130400.65 )
, . .
: .. ..., . .
.. . . .
.. ..., . .
.
2013 .
.. 4
1. ר.. 4
2. ר .. 4
2.1. . 5
2.2. . 8
2.3. . 10
2.4. . 13
2.5. . 15
ר 1. 16
, , . .
130400.65.00.10 .
1. ר
, , , 4 (297*210). : ; ; ; ; . , .
2. ר
, R, G E J. , , -. 2b , b q . b , J, b , E,
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2b b b.
, .
, , b.
: , ,
ΣIq = 0, (1)
, .
:
ΣUk = 0, (2)
... ,
ΣRkIk = Ek, (3)
..., .
: , , q 1 , , b (q 1) .
, .. , , , , , .
b q ,
d = q- 1, k = b - (q-1). d , , k , . , , .
, , , .
, (. 1) . 2. , : (q 1 = 3 1 = 2), .
:
1 I1 I2 I3 J3 = 0
2 I3 + J3 + I5 I4 J4 = 0
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1-2 R1I1 R2I2 = E1 + E2
1-3-5 R1I1 R3I3 + R5I5 = E1 E3 + E5
4-5 R4I4 + R5I5 = E5
. 1 . 2
1 = 3 , J3 = 1 A, R1 = 4 ,
2 =5 = 2 , J4 = 0,5 A, R2 = 6 ,
3 = 1 , R3 = 2 ,
R4 = 8 ,
R5 = 10 ,
(4)
,
* = , = -1*.
MATLAB MathCad .
1) Using Toolbox Path Cache. Type "help toolbox_path_cache" for more info. To get started, select "MATLAB Help" from the Help menu.
>> A=[-1 -1 -1 0 0; 0 0 1 -1 1; 4 -6 0 0 0; 4 0 -2 0 10; 0 0 0 8 10]
A =
-1 -1 -1 0 0
0 0 1 -1 1
4 -6 0 0 0
4 0 -2 0 10
0 0 0 8 10
>> B=[1; -0,5; 5; 4; 2]
B =
1.0000
-0.5000
5.0000
4.0000
2.0000
>> AI=inv(A)
AI =
-0.4372 -0.3015 0.0729 0.0678 0.0377
-0.2915 -0.2010 -0.1181 0.0452 -0.0251
-0.2714 0.5025 0.0452 -0.1131 0.0628
-0.1508 -0.2764 0.0251 -0.0628 0.0905
0.1206 0.2211 -0.0201 0.0503 0.0276
>> I=AI*B
I =
0.274
-0.651
-0.623
0.043
0.166
2)
multisim
. 3
, , ( ). ( ) p p q + 1 , . .
, , , , ...
Ik , .
Rk , .
, , (Rkj).
... ... (k).
:
- ();
- , , ;
- ..., ;
- .
, .3
R1=30 , R2=20 O, R3=20 , R4=40 , R5=60 , R6=40 , R7=10 , J7=0,4 A, E3=4 , 6=16 .
(.4) ( 2-5-3-7). , .
:
-
Ų = -3 = -3 ;
I I = 6 + 3 + R7I7 = 18 + 3 + 10*0,4 = 25 ;
III = 4 = 4 ;
- : RI = R1 + R2 + R3 = 70 ; RII = R3 + R5 + R6 + R7 = = 130 ; RIII = R2 + R4 + R5 = 120 ;
- : RI-II = R3 = 20 ; RI-III = R2 = 20 ; RII-III = R5 = 60 .
; ; .
, , , - , . ,
(5), , : , RkIk, Rkj; (k).
, q, , k : q-1>k.
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, , , .. , . q p - 1 , . , () , (). (. 5).
:
.5 |
(. 6),
Σ ; Rab Gab=1/Rab.
. , , Gii. , , () Gij. Ji , . , .
:
- ; ( ) ;
- , ;
- ; , ;
- .
:
: (. 7)
R1=R3=R4=10 ; R2=R5=5 ; R6=2 ; R7=1 ; E1=200 B; E2=80 B; E3=30 B; E6=38 B; E7=60 B.
(. 7).
:
; ; .
(. 7 8).
. , . b b q + 1 ≥ q b - 1 , , .
, . , , .